Anders WinrothAnders Winroth taught medieval history at Yale University from 1998–2020, and currently teaches at the University of Oslo. The author of The Making of Gratian's 'Decretum,' (Cambridge University Press, 2000) which revolutionized our understanding of edieval canon law, he was a named a MacArthur Foundation Fellow in 2003. He serves as President of the Institute of Medieval Canon Law. Read More Read Less